Uchiha Yi

Biodata

Power Progression

Background and History

Yi is Kagami Uchiha’s son. Because Kagami spent much of his life on missions, Yi was raised under the care of Uchiha Yohei, Mikoto’s grandfather and leader of the clan’s Dove Faction. Kagami’s support for Hiruzen Sarutobi as Lord Third had helped split the Uchiha between those seeking cooperation with Konoha and hardliners who opposed it 1. Yi possesses knowledge of the shinobi world from before finding himself in Uchiha Yi’s body 1.

After Kagami dies during the mission to Uzushio, Yi becomes suspicious about the disappearance of his father’s Mangekyō Sharingan. He does not know who has the eyes and resolves to become strong enough to control his own future 1 4. He continues attending the Ninja Academy, trains under Yohei, and later becomes Tsunade’s true disciple. Mito Uzumaki also teaches him and supports his development 4 10 21 24.

Yi seeks closer ties with Konoha’s leadership without abandoning his Uchiha identity. He tells Yohei that such connections could give him a chance to compete for the Hokage position, while Yohei promises to handle opposition within the clan 22. Tsunade subsequently arranges his early graduation alongside Mikoto and Nawaki 26.

At ten, Yi defeats Hanzō one-on-one using Sage Mode, prompting Hiruzen to plan his promotion from Genin to Jonin and publicize his achievement. Hiruzen later offers him an Anbu command with responsibility for guarding Mito and protecting Kushina. Yi asks to include Uchiha in his unit as a practical way to improve relations between the clan and village 99 103 106. His team comes to include Mikoto, Rinka, Nawaki, and Minato 112 113.

During the war with Kirigakure, Yi defeats the Seven Ninja Swordsmen of the Mist and leads missions that inflict severe losses on the village. He later leads his Anbu squad into Kirigakure, releases the Three-Tails, and causes extensive destruction. Hiruzen appoints him commander of the Kirigakure front after its previous command suffers heavy losses 142 146 164 181 182. Yi also moves against Uchiha clan leader Heitai’s faction, intending to lead the clan while having Mikoto speak for him in its affairs 194 208.

Yi’s pursuit of strength brings him into conflict with threats beyond the villages, including the Ōtsutsuki. He fights Hamura and Isshiki, gathers knowledge and allies for a wider struggle against their clan, and continues to develop both his own powers and those of his companions 229 301 314 424. By Konoha Year 48, he is serving as Hokage 401.

Personality

Yi is ambitious, politically alert, and careful about revealing his strength. He expects both clan leaders and village leaders to act in their own interests, and he accepts their help without wanting to become anyone’s tool 1 2 26. He considers loyalty between a clan and its village reciprocal: each should protect the other, but betrayal would justify resistance 20.

In combat, Yi favors preparation and adaptation over a straightforward contest of power. His Battle Space losses make him attentive to the gap between his talent and experienced elite shinobi 3 12 24. Although composed after killing enemy ninja, he says his reason for growing stronger is to survive and protect people whose loss would leave others grieving 43.

Yi increasingly treats strength as necessary for political independence, but recognizes that alliances, public support, and restraint matter if he is to lead Konoha or reform the Uchiha. He refuses to move openly against Hiruzen while the Lord Third remains in office and prefers evidence to arbitrary punishment when confronting political opponents 112 164 197 200. His loyalty to Konoha is sincere but personal: he later tells Madara that he protects the village partly because it is his responsibility and because he wishes to honor Mito 390.

Abilities and Skills

Sharingan and chakra

• Yi’s Sharingan progresses from one to three tomoe between ages six and seven. Yohei notes that even Yi’s one-tomoe eyes possess unusually strong ocular power 1 10 12 26.
• A Battle Space victory over Sasuke grants him pure Indra’s Chakra, immediately increasing his eye power and chakra. Yi notices that it also makes his chakra feel colder 3.
• He uses Sharingan genjutsu to create an opening against a Rain Jonin 42.
• His Three-Tomoe Sharingan develops extraordinary eye power without awakening the Mangekyō. Yohei judges it stronger than Kagami’s Mangekyō, and Yi can manifest Susanoo while retaining three tomoe 87 111 208.
• After gaining the Rinnegan, Yi awakens Takemikazuchi, which commands the planet’s lightning, and the Seven-Arrows Nail-Head Book, a costly technique capable of destroying Ōtsutsuki souls under the right conditions 158.
• His Six-Tomoe Rinnegan grants Limbo: Border Jail and Yomotsu Hirasaka. He can return his eyes to their ordinary appearance rather than displaying the Rinnegan continuously 196. His later forehead Rinne Sharingan grants powers including Amenominaka and Infinite Tsukuyomi 298.
• Yi masters Yin–Yang Release sufficiently to immobilize the reanimated Kagami with Black Rods. He also uses Six Paths: Chibaku Tensei against Hamura 250 301.

Battle Space

• The Battle Space presents Yi with random virtual opponents each month. Defeating one grants a randomly selected ability, talent, or physical trait from that opponent 2.
• Acquired gains include Sakura’s chakra-control talent, Nawaki’s mixed Senju–Uzumaki physique, Asuma’s Wind Release proficiency, Minato’s spatial aptitude, and Rock Lee’s hand-to-hand combat experience 11 12 26.
• Other rewards include Haku’s one-handed hand seals, Neji’s Eight Trigrams Sixty-Four Palms, Itachi’s combat wisdom, and Young Tobirama’s sensory ability 24 36 50.
• Yi cannot choose which ability a victory awards him, and opponents such as Sasori and Obito remain beyond him when he first encounters them 2 24.
• Later rewards include Asura’s physique, Izuna’s swordsmanship, Tobirama’s ninjutsu-creation talent, and the Shikotsumyaku bloodline. Victories also give him pure One-Tail and Two-Tails chakra, Sakura’s medical expertise, both Kamui abilities, pure Six Paths Yin Power, and Kaguya’s constitution 117 119 156 195 221 223 371 376.

Ninjutsu and close combat

• Yi has innate Fire and Lightning Release affinities; acquiring Asuma’s proficiency brings his Wind Release skill up to a comparable level 3 12.
• With guidance from Tsunade and Mito, he creates Chidori, an A-rank Lightning Release technique, at age six. Its high-speed charge is dangerous without the visual tracking needed to respond to an opponent’s counterattack 23.
• He studies Body Flicker extensively and combines its speed with swordsmanship. He also incorporates Tsunade’s Monstrous Strength into his fighting style 12 26.
• He can use Earth Release: Earth Substitute to escape an explosive trap 12.
• He acquires Gentle Fist techniques but cannot use them to their full potential—or readily display them in public—without the Byakugan 24 50.
• Yi develops the hand-seal-free Rasengan from the Tailed Beast Bomb and produces a larger Big Ball Rasengan through greater chakra input and control. He later combines Rasengan techniques with Flying Thunder God and senjutsu, using Sage Art: Wind Release: Big Ball Rasenshuriken against Asura 73 76 115.
• His acquired elemental knowledge and bloodlines broaden his techniques. Asura’s physique makes Wood Release attainable, while Hiruzen’s insights into the five basic nature transformations deepen Yi’s study of elemental combinations and Kekkei Mōra 124 195.
• Izuna’s swordsmanship allows Yi to apply his physical strength more effectively and helps compensate for his limited early battle experience. He also studies opponents’ techniques during combat, including Izuna’s Fire Release and Hamura’s taijutsu 118 119 301.
• Yi gains Sakura’s medical expertise through the Battle Space and considers using it to strengthen his companions 221.

Sage Mode and bloodline development

• Yi directly senses Natural Energy and, under Sage Katsuyu’s guidance, quickly learns to absorb and control it. His Sage Mode produces glowing tomoe on his clothing; with practice, he can absorb Natural Energy during combat and incorporate senjutsu into his techniques 83 87 90.
• Combining Uchiha, Senju, Uzumaki, Hyuga, Asura, and Ōtsutsuki traits drives Yi’s bloodline reversion and greatly expands his vitality and chakra. He remains mindful that powerful eyes and rapid development can strain an insufficiently strong body 76 117 158 160.
• Yi studies Tailed Beast chakra as another route to strengthening his bloodline. Unlike Nine-Tails and Three-Tails chakra that he can use without fully merging with it, pure One-Tail chakra integrates with his body; he later integrates pure Two-Tails chakra as well 111 195 221.

Flying Thunder God and sensing

• Tsunade gives Yi the Flying Thunder God Technique scroll, while Mito helps him study the sealing jutsu it requires 31 32.
• By chapter 50, Yi can perform the technique but has not been able to apply it effectively in combat at high speed. Young Tobirama’s acquired sensory ability addresses that limitation 50.
• He can sense his surroundings within ten kilometers and detect large chakra signatures from at least three times that distance. He considers Flying Thunder God a potential means of escaping enemies he cannot defeat 50.
• After further training, Yi can precisely teleport to a Flying Thunder God mark moving at high speed. He later places marks on Tobirama, Hashirama, and Hiruzen during their confrontation 76 250.

Equipment and Items

• Sword of the Thunder God — Tobirama Senju’s former weapon, given to Yi in exchange for recording Chidori in the Scroll of Seals. Lightning chakra enhances it, and Yi can channel Chidori through it. He later gives the sword to his disciple Kakashi 27 28 421.
• Flying Thunder God Technique scroll — obtained for Yi by Tsunade 31.
• Sealing-jutsu guide — given to Yi by Mito as he studies the foundations needed for Flying Thunder God 32.
• Kunai, wire, and Explosive Tags — used together to trap opponents in the Battle Space 3 11.
• Captured Ninja Blades of the Mist — Yi keeps the blades taken after defeating the Seven Ninja Swordsmen as spoils. He supports Nawaki’s claim to Samehada and gives Kiba to Mikoto 146 148.
• Ten-Tails Husk sword — a wooden-looking sword Yi makes from the Ten-Tails Husk and uses while teaching Kakashi swordsmanship 421 422.

Relationships

• Kagami Uchiha — father. Yi rarely saw him because of his missions and suspects that the circumstances surrounding his death and missing eyes remain unresolved 1 4. Yi later faces a reanimated Kagami in combat and immobilizes him 246 250.
• Uchiha Mikoto — cousin and childhood companion. She looks after him, trains alongside him, and becomes concerned about falling behind his rapid progress 1 2 9 22. She later joins his Anbu team, accepts a proposed role as his spokesperson within the Uchiha Clan, and is identified as the mother of his son Sasuke 112 208 323.
• Uchiha Yohei — Mikoto’s grandfather and Yi’s early Sharingan instructor. He supports Yi’s training while warning him against arrogance and clan politics 10 22. He later advises Yi as the struggle with Heitai and Fugaku’s faction intensifies 112 113 208.
• Tsunade — teacher and squad leader. She accepts Yi as a true disciple, helps him develop Chidori, and obtains the Sword of the Thunder God and Flying Thunder God scroll for him 21 23 27 31.
• Mito Uzumaki — mentor who tests Yi’s views on Konoha and the Uchiha, then teaches him techniques and sealing jutsu 20 21 24 31. Yi promises to protect Kushina and later says that honoring Mito is one reason he protects Konoha. Her death deeply affects him 111 286 390.
• Kushina Uzumaki — friend and teammate. Yi initially worries that closeness to her will attract political attention, but they grow close through school and Tsunade’s squad 5 10 36. He promises Mito to protect her; his feelings for Kushina later complicate his relationship with Mikoto 111 164.
• Hyuga Rinka — teammate. Their first meeting is formal, and Yi later fights alongside her on the squad’s Rain Ninja mission 31 41 43. Their bond grows during the Mist campaign, and Rinka acknowledges her attraction to him despite Hyuga clan restrictions. She is later identified as the future mother of his daughter 146 148 159 318.
• Hiruzen Sarutobi — Lord Third. He supports Yi’s training and refuses Danzō’s attempts to bring him into Root, though he later becomes conflicted about Yi’s political future 5 27 45 46. Hiruzen subsequently promotes Yi’s wartime achievements, entrusts him with Anbu and battlefield commands, and helps prepare him for leadership 99 106 181 194.
• Minato Namikaze — member of Yi’s Anbu team. Yi recognizes his tactical ability, promises to help develop his Body Flicker Technique, and considers him a future master of Flying Thunder God and a suitable successor as Hokage 113 148 163 421.
• Nawaki Senju — friend and member of Yi’s team. Yi encourages him to master Samehada and later keeps him in Konoha to train rather than accompany a dangerous return to the front 112 146 148 184.
• Madara Uchiha — initially a hidden threat whom Yi hopes to become strong enough to face. They later cooperate over the seal holding Uchiha Hikari and discuss Konoha, the Uchiha, and Yi’s political choices with growing mutual understanding 28 389 390.
• Uchiha Hikari — an ancient Uchiha whom Yi frees from a century-old seal. He allows her to absorb a controlled amount of his chakra through Yachihoko, causing her Mangekyō Sharingan to evolve into a genuine Eternal Mangekyō Sharingan 390 395 396.
• Kakashi Hatake — disciple. Yi guides his development as a swordsman, gives him the Sword of the Thunder God, and considers him a potential future Hokage 421 422.
• Kaguya Ōtsutsuki — Yi approaches her as a potential ally against the wider Ōtsutsuki threat, offering some of Shibai’s power in exchange for her help while refusing to take the Tailed Beasts from the Shinobi World 422 423.

Major Arcs

• Academy and mentorship — Yi returns to school after Kagami’s death, trains under Yohei, befriends Kushina, and earns Tsunade’s and Mito’s support 4 10 20 21.
• Early graduation — Yi develops Chidori, gains the Sword of the Thunder God, and receives approval to graduate early 23 26 28.
• Tsunade’s squad — Yi joins Kushina and Rinka. During a mission against Rain Ninja, he kills a Jonin while Tsunade supervises the team’s first serious combat experience 31 36 41 42 43.
• Sensory breakthrough — while training to make Flying Thunder God useful in combat, Yi acquires Young Tobirama’s sensory ability through the Battle Space 50.
• Sage training and the Rain battlefield — Yi develops Rasengan techniques, masters Sage Mode at Shikkotsu Forest, and defeats Hanzō. Konoha publicizes his achievement, and Hiruzen moves to recognize his strength formally 73 87 96 99 103.
• Anbu and the Kirigakure war — Yi takes command of an Anbu team, defeats the Seven Ninja Swordsmen of the Mist, and becomes one of Konoha’s foremost wartime figures. He later releases the Three-Tails in Kirigakure and is appointed commander of the Mist front 106 113 146 164 181 182.
• Bloodline evolution and clan politics — Battle Space gains bring Yi Asura’s physique and Izuna’s swordsmanship, followed by the Rinnegan. As his standing rises, he contests Heitai’s control of the Uchiha and asks Mikoto to represent him in clan affairs 117 119 158 194 208.
• Threats beyond the villages — Yi investigates hidden powers connected to the Daimyō, confronts reanimated Konoha leaders, and faces attacks involving the Giant Tenseigan. His eyes evolve further as he prepares for conflict with the Ōtsutsuki 220 246 250 266 286.
• Six Paths conflicts — Yi fights Hamura and Isshiki, awakens the Rinne Sharingan, and pursues ways to strengthen allies against the Ōtsutsuki. Later Battle Space victories give him permanent Six Paths Yin–Yang Power and Kaguya’s constitution 298 301 314 372 376.
• Hokage and preparation for future threats — While serving as Hokage, Yi continues to mentor younger shinobi, including Kakashi, and seeks Kaguya’s help against the anticipated Ōtsutsuki threat 401 419 421 422.